Home / 138,864.87-191,633.31-75,202.92

Finding the Fourth Proportional to 138,864.87, 191,633.31 and 75,202.92

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Solution

The fourth proportional to 138,864.87, 191,633.31 and 75,202.92 is: 103,779.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,864.87 : 191,633.31 = 75,202.92 : x
  2. Step 2: Convert to fraction form
    138,864.87/191,633.31 = 75,202.92/x
  3. Step 3: Cross multiply
    138,864.87x = 191,633.31 × 75,202.92
  4. Step 4: Simplify right side
    138,864.87x = 14,411,384,481.27
  5. Step 5: Solve for x
    x = 14,411,384,481.27/138,864.87
  6. Step 6: Final answer
    x = 103,779.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.